Trouble passing values through classes.

Dealy

Hello,
I have the following problem with passing values through different classes.

In general, MainForm has a textfield called IDNO and i want to load UserControl in MainForm filtered by this IDNO.

  public String return_IDNO()
   {
     return IDNO.Text; //IDNO is a texbox in MainForm()
   }
 
 I call the above in class frmCustomers:UserControl as following:
 
 MainForm cust = new MainForm();
 String temp_id=cust.return_IDNO();

I called the above code when loading the UserControl.

Any suggestions?

Thank you in advance.

2 Replies

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Roei Bar17y ago
Accepted answer
well my friend what you have done is actually declaring a new Instance of MainForm and not using the Instance that is currently Active, what you need todo is either declare the Method as Public Static in order to access it, or use a delegate in order to access that method via the UserControl

here is a sample for 2 forms Data passing
Assuming that formB is initialized in formA I would recommend adding a string to the constructor of formB sending the Texbox1.Text

as in

class formB: Form{ private string data; public formB(string data) { InitializeComponent(); this.data = data; } //rest of your code for the class }
Dealy17y ago
Thank you so much!

Your explanation sure help me understand how things works :)